Os dejo las principales operadoras y sus DNS:

Arrakis
195.5.64.2
195.5.64.6

Arsys
217.76.128.4
217.76.129.4

Auna
62.81.31.250
62.81.61.2
62.81.61.35

Comunitel
212.145.4.97
212.145.4.98

Eresmas
62.81.0.33
62.81.16.129

Euskaltel
212.55.8.132
212.55.8.133

Jazztel (adsl 2+)
87.216.1.65
87.216.1.66

Jazztel
62.14.2.1
62.14.4.64
62.14.4.65
62.14.63.145

Metrored
80.251.75.5
80.251.75.6

Orange
62.36.225.150
62.37.228.20

Tele2
130.244.127.161
130.244.127.169

Telefonica Argentina
200.51.211..7
200.51.212.7

Telefonica Data
80.58.0.33
80.58.32.97

Telefonica España
80.58.61.250
80.58.61.254
194.179.1.100
194.179.1.101

Telefonica Peru
200.48.225.130
200.48.225.146

Terra
194.224.52.36
194.224.52.37

Tiscali194.224.52.36
194.224.52.37

Uni 2
195.130.224.18
195.130.225.129

Wanadoo
62.36.225.150
62.37.228.20

Ya.com
62.151.2.8
62.151.4.21
62.151.8.100
62.151.20.6
62.151.20.7

arag